Memory requirements for serial and parallel runs -- CFD Online Discussion Forums

August 26, 2008, 16:11	Hi OpenFOAM-Community, I have	#1
denner New Member Fabian Denner Join Date: Mar 2009 Location: Zurich, Switzerland Posts: 11 Rep Power: 17	Hi OpenFOAM-Community, I have a question concerning the memory requirements of simpleFoam. I tried to run a simpleFoam simulation with a mesh of about 4 million cells on a multicore-cpu computer with 8GB RAM. The serial-run breaks down when starting the 1st iteration. But if I take the same case, decompose into two parts and run in parallel with 2 nodes on the same computer (8GB RAM), there is no more memory problem. Is there any special reason for that kind of memory reequirement? Best regards, Fabian

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